Add half of the coated fish fillets in a single layer to the hot oil in the skillet. The oil should be hot enough that it sizzles when you add the fish. Fry the fish until golden on the bottom. This will take about 3 to 4 minutes.
Once the first side is golden, flip the fish over using a large metal spatula and a fork to steady the fish. Take care to avoid splattering the fat. The fat should still be hot enough to sizzle when the fish is flipped.
Cook the second side until golden and the fish begins to flake when tested with a fork (3 to 4 minutes more).
Layer two or three paper towels on a dinner plate. With a spatula, carefully transfer each cooked piece of fish to the paper towels to drain. Flip the fish to drain both sides.
Keep the cooked fish warm on a baking sheet in the oven while cooking the remaining fish.